朱丹溪曰∶有妊妇患此，脉之两手似涩，重取则弦，此得之忧患。涩为血少气多，弦为有饮。血少则胞弱
而不能自举，气多有饮，则中焦不清而隘胞，胞知所避而就下，故坠。以四物加参、术、半夏、陈皮、生姜，
空心饮之，随以指探吐药汁，少顷又与，如是八帖而安。此法果为的确否，恐偶中耳。后有数人历效，未知果
何如也。
朱丹溪曰∶有妊娠七八月，小便不通。百医不能利，转急胀，诊之脉细弱。此血气虚弱，不能上载其胎，
故胎重坠下，压住膀胱下口，因此溺不得出。若服补药，升扶胎起，则自下，因药力未至，愈加急满，遂令老
妇用香油涂手，自产户托起其胎，溺出如注，胀
急顿解。以大剂参、 服之，三日后，胎渐起，小便如故。
赵养葵曰∶有妊妇转胞，不得小便，由中气虚怯，不能举胎，胎压其胞，胞系了戾，小便不通。以补气加
升举之药，令下窍通，补中汤加减是也。
《证治要诀》曰∶转胞之说，诸论有之，以胎渐长，且近下，逼迫于胞，胞为所逼而侧，故名转胞。胞即
膀胱也。然子淋与转胞相类。但小便频数，点滴而痛者，为子淋。频数出少不痛者，为转胞，间有微痛，终与
子淋不同。并宜生料五积散、五苓散加阿胶。
慎斋按∶以上十二条，序胎前有转胞之证也。妊娠转胞，《甲乙》、《金匮》二条是详转胞证候也。而病
机所属，则有虚实之分。仁斋以下四条，主于忍尿、饱食、房事、脬热，此实邪为病也。丹溪以下三条，主
于血少气虚，此不足为病也。胎前转胞，大抵因气虚血少，血少则胎无以养，气弱则胎不能举，因下坠而压于
膀胱，胞为之转，而溺不出。备观丹溪所论，虽有忧闷、性躁、浓味诸因，其立方处治，自探吐、推托二法外，
唯以补气补血为主。故立斋云∶此证悉如丹溪治法为当。推展言之，又有脾肺气虚，不能下输膀胱者；有气热
郁结膀胱，津液不利者；有金为火烁，脾土湿热甚而不利者，当详审施治也。
朱丹溪说：有孕妇患此病，诊察其脉象，两手脉象似乎涩滞，重按时则呈弦象，这是由于忧虑惊恐所致。涩脉主血少气多，弦脉主体内有水饮。血少则胞宫虚弱，不能自行托举；气多且有水饮，则中焦不清爽而狭窄压迫胞宫，胞宫知道躲避而向下坠，所以发生下坠感。用四物汤加入人参、白术、半夏、陈皮、生姜，空腹服用，随即用手指探喉催吐药汁，过一会儿再喂服，像这样连续服用八剂后病情安定。这种方法果然确切吗？恐怕只是偶然奏效罢了。后来有几个人依次治疗都有效，不知究竟如何。
朱丹溪说：有妊娠七八个月时，小便不通。众多医生无法使其通利，转急胀，诊察其脉象细弱。这是气血虚弱，不能向上承载胎儿，所以胎体沉重下坠，压住膀胱下口，因此尿液不得排出。如果服用补药，提升扶持胎儿起立，则自然通畅，但因药力未到，更加急满，于是让老妇人用香油涂手，从产户托起其胎儿，尿液流出如注，胀急顿时解除。用大剂量人参、白术等药物服用，三天后，胎儿逐渐升起，小便恢复正常。
赵养葵说：有孕妇转胞，不能小便，是由于中气虚怯，不能托举胎儿，胎儿压迫其胞宫，胞系扭曲，导致小便不通。用补气加上升举的药物，令下窍通畅，补中汤加减即是此法。
《证治要诀》说：转胞的说法，各种论述都有，因为胎儿渐渐长大，且位置偏下，逼迫于胞宫，胞宫被逼迫而侧斜，所以名叫转胞。胞宫即膀胱。然而子淋与转胞相似。但小便频数，点滴而出且疼痛的，称为子淋。频数而出量少且不痛的，称为转胞，间或有轻微疼痛，终究与子淋不同。两者都适宜使用生料五积散、五苓散加阿胶。
慎斋按语：以上十二条，叙述了胎前有转胞的证候。妊娠转胞，《甲乙经》、《金匮要略》两条详细记载了转胞的证候。而病机所属，则有虚实之分。仁斋以下的四条，主张因忍尿、饱食、房事、脬热，这是实邪致病。丹溪以下的三条，主张因血少气虚，这是不足致病。胎前转胞，大致因气虚血少，血少则胎儿无以滋养，气弱则胎儿不能托举，因而下坠压迫于膀胱，胞宫为之扭转，而尿液不出。全面观察丹溪所论，虽然有忧闷、性躁、浓味等各种原因，其处方治疗，除了探吐、推托两种方法外，主要以补气补血为主。所以立斋说：此证完全按照丹溪的治疗方法是恰当的。推广言之，又有脾肺气虚，不能向下输注膀胱的；有气热郁结膀胱，津液不利的；有金（肺）被火（心）灼烧，脾土湿热甚而不利者，应当详细审察施治。
Zhu Danxi said: There are pregnant women suffering from this condition. Upon pulse diagnosis, the pulses in both hands appear choppy (Se), and upon heavy pressure, they become wiry (Xian). This is caused by worry and fright. A choppy pulse indicates blood deficiency with excess qi, while a wiry pulse indicates the presence of fluid retention (Yin). Blood deficiency leads to weakness of the uterus (Bao), which cannot lift itself; excess qi combined with fluid retention causes turbidity in the middle jiao, narrowing and compressing the uterus. The uterus, knowing it must avoid pressure, descends, resulting in a sensation of prolapse. Treatment involves Si Wu Tang (Four Substances Decoction) added with Renshen (Ginseng Root), Baizhu (Atractylodes Rhizome), Banxia (Pinellia Tuber), Chenpi (Tangerine Peel), and Shengjiang (Fresh Ginger), taken on an empty stomach. Immediately after, the patient's throat should be stimulated to induce vomiting of the medicine. After a short while, more is administered. Repeating this process for eight doses brings relief. Whether this method is truly effective or merely coincidental remains uncertain. However, subsequent cases treated sequentially showed efficacy, though the exact mechanism is unclear.
Zhu Danxi said: In pregnancies of seven or eight months, urinary retention occurs. Many physicians failed to promote urination, leading to urgent distension. Pulse diagnosis revealed fine and weak (Xi Ruo) pulses. This is due to deficiency of qi and blood, which fails to support the fetus upward. Consequently, the heavy fetus descends and compresses the lower opening of the bladder, preventing urine output. If tonifying herbs are administered to lift the fetus, patency may return naturally. However, before the medicinal effect takes hold, distension worsens. In one instance, an elderly woman applied sesame oil to her hand and manually lifted the fetus through the vagina, causing urine to flow freely and relieving the distension immediately. Large doses of Renshen (Ginseng Root) and Baizhu (Atractylodes Rhizome) were then administered. After three days, the fetus gradually rose, and urination normalized.
Zhao Yangkui said: Pregnant women suffering from Zhuan Bao (displaced bladder/uterus) experience urinary retention due to deficiency and timidity of Middle Qi (Spleen/Stomach Qi), which fails to support the fetus. The fetal weight compresses the uterus, twisting its connecting tissues, thus blocking urination. Treatment involves tonifying qi and using ascending herbs to open the lower orifice, such as modified Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction).
*Zheng Zhi Yao Jue* states: The concept of Zhuan Bao is discussed in various texts. As the fetus grows and moves downward, it presses against the bladder (Pao), causing it to tilt, hence the name "Displaced Bladder." Note that Zi Lin (Fetal Strangury) resembles Zhuan Bao. However, frequent urination with scanty, painful drops is Zi Lin. Frequent urination with scanty output but no pain is Zhuan Bao. Occasionally, mild pain may occur, but it differs fundamentally from Zi Lin. Both conditions may be treated with Sheng Liao Wu Ji San (Five Accumulations Powder without processing) or Wu Ling San (Five-Ingredient Powder with Poria) added with Ejiao (Donkey-Hide Gelatin).
Shen Zhai commented: The above twelve items describe the syndrome of Zhuan Bao occurring before delivery. Regarding pregnancy-related Zhuan Bao, *Jia Yi Jing* and *Jin Gui Yao Lue* detail the symptoms. The pathogenesis can be divided into excess (Shi) and deficiency (Xu). The four points below Ren Zhai attribute the cause to holding urine, overeating, sexual intercourse, and heat in the bladder (Pao), representing disease caused by excess pathogens. The three points following Zhu Danxi attribute the cause to blood deficiency and qi deficiency, representing disease due to insufficiency. Generally, pre-delivery Zhuan Bao results from qi deficiency and blood deficiency. Blood deficiency means the fetus lacks nourishment; qi weakness means the fetus cannot be supported, leading to descent and compression of the bladder. The bladder tilts, and urine cannot exit. Reviewing Zhu Danxi’s discussion, although factors like emotional depression, irritability, and rich diet are mentioned, his prescriptions primarily focus on tonifying qi and blood, aside from methods like inducing vomiting and manual lifting. Therefore, Li Lizhai stated that treating this condition exactly according to Zhu Danxi’s methods is appropriate. Expanding on this, there are also cases of Spleen and Lung qi deficiency failing to transport fluids to the bladder; cases of qi-heat stagnation in the bladder obstructing fluid metabolism; and cases where Metal (Lung) is scorched by Fire (Heart), leading to severe damp-heat in Spleen Earth obstructing flow. These require careful differentiation and treatment.